forked from eclipse-cdt-cloud/vscode-memory-inspector
/
memory.ts
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/
memory.ts
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/********************************************************************************
* Copyright (C) 2024 EclipseSource.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the Eclipse
* Public License v. 2.0 are satisfied: GNU General Public License, version 2
* with the GNU Classpath Exception which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
********************************************************************************/
import { ReadMemoryArguments, ReadMemoryResult } from './messaging';
export interface Memory {
address: bigint;
bytes: Uint8Array;
}
export function createMemoryFromRead(result: ReadMemoryResult, request?: ReadMemoryArguments): Memory {
if (!result?.data) {
const message = request ? `No memory provided for address ${request.memoryReference}`
+ `, offset ${request.offset} and count ${request.count}!` : 'No memory provided.';
throw new Error(message);
}
const address = BigInt(result.address);
const bytes = stringToBytesMemory(result.data);
return { bytes, address };
}
export function stringToBytesMemory(data: string): Uint8Array {
return Uint8Array.from(Buffer.from(data, 'base64'));
}
export function bytesToStringMemory(data: Uint8Array): string {
return Buffer.from(data).toString('base64');
}
export function validateMemoryReference(reference: string): string | undefined {
const asNumber = Number(reference);
// we allow an address that is not a number, e.g., an expression, but if it is a number it must be >= 0
return !isNaN(asNumber) && asNumber < 0 ? 'Value must be >= 0' : undefined;
}
export function validateOffset(offset: string): string | undefined {
const asNumber = Number(offset);
return isNaN(asNumber) ? 'Must be number' : undefined;
}
export function validateCount(count: string): string | undefined {
const asNumber = Number(count);
if (isNaN(asNumber)) {
return 'Must be number';
} else if (asNumber <= 0) {
return 'Value must be > 0';
}
}